Borla Universal 2-1/4, 2-1/4 14x7-7/8 x 4-1/4 w/ Notch PRO-XS Muffler

SKU: BOR400479

Mufflers

BOR Pro-XS Mufflers...

Borla

Borla Universal 2-1/4, 2-1/4 14x7-7/8 x 4-1/4 w/ Notch PRO-XS Muffler

SKU: BOR400479

Mufflers

BOR Pro-XS Mufflers...

Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.

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Description

Value-priced BORLAÂ® ProXS mufflers share many of the hottest features of our performanceline. Including high-quality 300 Series austenitic stainless steel construction, streetcommandingsound and our Million Mile Warranty. Sizes are available for import anddomestic cars and trucks.

Product Overview

Notched necks for easy clamp-on installation. Compact size is perfect for applications with limited space. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation.

Product Details

Body Height (in.):	4.25
Body Height:	4.250 in.
Body Length (in.):	14
Body Length:	14.000 in.
Body Width (in.):	7.875
Body Width:	7.875 in.
Construction:	All Welded
Description:	BorlaÃ‚Â® Pro XS Muffler
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Position:	Offset
Inlet Size (in.):	2.25
Inlet Type:	Single Offset
Main Piping Diameter:	2.250 in.
Material:	T-304 Stainless Steel
Muffler Count:	1
Off Road Use Only:	No
Outlet Outside Diameter:	2.250 in.
Outlet Position:	Center
Outlet Size (in.):	2.25
Outlet Type:	Single Center Outlet
Overall Length (in.):	18
Overall Length:	18.000 in.
Part Number:	bor400479
Position:	N/A
Prop 65 (C, R or CR):	CR
Prop 65 - Long Label:	WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Prop 65 - Short Label:	Proposition 65 Warning.JPG
Prop 65 Yes/No:	Yes
Shape:	Oval
Tip / Outlet Finish:	N/A
Title Extended:	ProXS Muffler 2.25in Offset/Center 14inx4.25inx7.88in Part # 400479
Title:	ProXS Muffler 2.25in Offset Inlet/ 2.25in Center Outlet 4.25in x 7.88in Oval x 14in Long Body Notched Necks

Application Summary

ProXS? Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4.25" x 7.88" Oval, 14 Long Body, 19" Overall Length. Universal Part. Reversible Design. Notched Necks.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-15 02:12:39

Features

2.25" Offset Inlet / 2.25" Center Outlet, 4.25" x 7.88" Oval, 14" Long Body, 19" Overall Length
Alternate muffler with Un-Notched necks is 40658. If clamping, use 3" wide band clamps 18003.
Notched necks are designed for clamp in installation. Use 1" wide band clamps 18322.
Universal muffler. Reversible design.

Specifications

Product Attributes - UPC: 808422004794
Product Attributes - Brand: Borla
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Mufflers
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: No
Product Attributes - Width (in.): 7.875 in.
Product Attributes - Outlet Style: Standard, without tip
Product Attributes - Product Line: Borla ProXS Mufflers
Product Attributes - Inlet Location: Offset
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Natural
Product Attributes - Outlet Location: Center
Product Attributes - Outlet Quantity: 1
Product Attributes - Thickness (in.): 4.250 in.
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 2.25 in.
Product Attributes - Overall Length (in.): 18.00 in.
Product Attributes - Internal Construction: Straight-through core
Product Attributes - Outlet Diameter (in.): 2.25 in.
Product Attributes - Case Exterior Length (in.): 14.00 in.
Product Attributes - Manufacturer's Part Number: 400479

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor400479
SFX Item ID	4224885
Supplier Item Code	4224885
Manufacturer SKU	400479
Manufacturer UPC	808422004794
Alternative References	14x7-7/8

Brochures

Primary brochure

Compatibility

ProXS? Muffler 2.25" Offset Inlet/ 2.25" Center Outlet, 4.25" x 7.88" Oval, 14 Long Body, 19" Overall Length. Universal Part. Reversible Design. Notched Necks.

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